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Products

Products I use

Things I use regularly and paid for myself — five supplements, a headset and a book. For each one: what it is, what it costs, the dosage, and what it is actually for. All of them are available on Amazon. When I stop using something, it is removed from this page.

Every product listed here is sold through Amazon. That has practical advantages worth stating plainly:

Recommended first purchase

Creatine monohydrate — €15.95

If you buy one product from this page, this is the one. It costs under five cents per serving, it is the only supplement here with an officially authorised performance claim in the EU, and one kilogram covers the better part of a year.

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Overview

ProductPricePurpose
Creatine monohydrate€15.95Training performance
Magnesium bisglycinate€15.90Micronutrient supplementation
Whey protein€35.99Protein intake when time is short
Corsair HS80 MAX€155.85Desk work and calls
Collagen with vitamin C€17.99Skin, nails, connective tissue
Weight gainer€73.92Calorie intake when appetite is limited
The 48 Laws of Power€12.45 / €22.00Reading, EN or DE
Robert Greene boxed set€77.23Reading, English — contains the book above
Advice to an 18-year-old self€19.99Reading, German
Recommended

CREAPROOF Creatine Monohydrate, 1000 g

ProFuel · Supplement

The best-researched supplement in this category and the least expensive product on this page. If I had to discontinue everything else, this is the one I would keep.

Price€15.95 for 1000 g
Dosage3 g per serving, approximately 333 servings per container — under five cents per serving
FormMonohydrate, the most extensively studied variant
QualityManufacturer states independent laboratory analysis
AdditionalVegan, measuring scoop included

Authorised claim

Creatine increases physical performance in successive bursts of short-term, high-intensity exercise. This is an authorised health claim under EU regulation, and it is the full extent of what may legitimately be claimed. Not muscle growth, not fat reduction, not cognitive performance.

Assessment

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Recommended

ESN Magnesium Bisglycinate, 120 capsules

ESN · Supplement

Straightforward to justify: approximately 26 cents per day, in capsule form, and in the variant that is generally well tolerated.

Price€15.90 for 120 capsules
Dosage194 mg magnesium per daily serving (2 capsules), 60 servings
FormBisglycinate — better tolerated and absorbed than magnesium oxide
AdditionalVegan

Authorised claims

Magnesium contributes to normal muscle function, to normal energy-yielding metabolism, and to the reduction of tiredness and fatigue. These are authorised claims under EU regulation.

Assessment

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Bulk Pure Whey Protein, Vanilla, 1 kg

Bulk · Supplement

22 g of protein prepared in under a minute. The product solves a time constraint rather than a nutritional one, and on that basis it is worthwhile.

Price€35.99 for 1 kg
Per serving22 g protein
TypeWhey concentrate, low sugar content
FlavourVanilla — mixes into other preparations without dominating them

Assessment

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Corsair HS80 MAX Wireless, Steel Grey

Corsair · Audio

Suitable for full working days. The microphone is adequate for calls without repetition, and simultaneous wireless and Bluetooth connection removes the usual conflict between computer audio and phone calls.

Price€155.85
ConnectivityWireless (dongle) and Bluetooth simultaneously
AudioDolby Atmos support
MicrophoneOmnidirectional
SoftwareCorsair iCUE
Note on variants before ordering. The product linked here is the Xbox version. Corsair offers several HS80 MAX configurations and wireless compatibility differs between them. Confirm which platform you require, as an incompatible dongle is the most common complaint across this model range.

Assessment

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Bulk Collagen with Vitamin C, Vanilla, 500 g

Bulk · Supplement

I use this product. The evidence base is more limited than for creatine or magnesium, and I consider that worth stating rather than omitting.

Price€17.99 for 500 g
CompositionCollagen peptides with added vitamin C
FlavourVanilla

Evidence and regulatory position

Assessment

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Optimum Nutrition Serious Mass, 5.45 kg

Optimum Nutrition · Supplement

Intended for those who struggle to consume sufficient calories through meals. It performs that function reliably, and the chocolate peanut butter flavour is agreeable at this serving size.

Price€73.92
Quantity5.45 kg, 16 servings
Per serving50 g protein
FlavourChocolate peanut butter
How I use it: half servings. Half a measure combined with a banana, a handful of walnuts and half an avocado produces a comparable calorie load with the addition of fats, fibre and micronutrients. A half serving is also considerably easier to drink than a full one, and the container lasts twice as long.

Assessment

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Books

Books I have read and would hand to someone starting out. Listed for what is inside them, not for who wrote them. Where an English original and a German translation both exist, both are linked — they are not always the same price.

The 48 Laws of Power

Robert Greene · English original and German translation

A catalogue of how power has actually been used, written without flattering anyone. It is a description, not a manual for how to behave, and it reads better if you take it that way.

EditionPriceRatings
English — Penguin paperback, the original€12.4587,536
German — “Power: Die 48 Gesetze der Macht”, hardcover€22.004,113
If you read English, take the English one. It is the original, it costs roughly half, and it carries twenty times the ratings — which means twenty times the material to check my opinion against before you spend anything. The German hardcover is the better object and the right choice if English would slow you down; a book you finish beats a book you save money on.

Robert Greene — 4-Book Boxed Set

The 48 Laws of Power · The Art of Seduction · The 33 Strategies of War · Mastery

The same author across four books, including the one listed above. So this is an either/or against the single book, not a follow-up purchase — buying both means paying for The 48 Laws of Power twice.

Price€77.23, paperback set
LanguageEnglish only
Rating4.5 out of 5 across roughly 171 ratings

What the set actually costs

I checked the four titles individually rather than assume, because boxed sets are usually assumed to be the cheaper route:

Bought separatelyPrice
The 48 Laws of Power€12.45
The Art of Seduction€19.49
The 33 Strategies of War€18.99
Mastery€19.49
Total€70.42
The boxed set€77.23
The set costs €6.81 more than the four books separately. What that buys you is the box, one delivery instead of four, and a set that looks like a set on a shelf — which is the whole point if it is a gift. If those seven euros are worth it to you, take the set. If not, buy them one at a time, which has its own advantage: you can stop after the first if Greene turns out not to be for you.

Assessment

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Was ich meinem 18-jährigen Ich raten würde

Dirk Kreuter · Hardcover · German language

Most books in this category run from a small sum to a large one and skip everything in between. This one does not. The stretches that were genuinely bad are in there, at length, and that is the entire reason it is on this page.

Price€19.99, hardcover
LanguageGerman — there is no English edition
Rating4.5 out of 5 across roughly 450 ratings on Amazon.de

Why it is here

Two things to know before you order. The book is in German only, so it is no use to you if you do not read German. And the author is a polarising figure in the German sales world — if you already have an opinion about him, this book will not change it. I am recommending the content, not the persona, and you should judge the sample pages for yourself before buying.

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What you are actually buying. Two of the six carry officially authorised claims in the EU — the creatine and the magnesium. The other four earn their place on practicality: protein ready in under a minute, calories that keep for months, a headset that survives a full working day. Both are sound reasons to spend money. Neither is what the packaging usually promises, which is why this page tells you which is which.

Prices and product details verified 27 September 2026 on Amazon.de. Amazon pricing changes frequently — the figures above reflect the date of verification and are not a guarantee. Cost per serving is derived from the serving counts stated by the manufacturers.

The product links on this page are Amazon affiliate links. As an Amazon Associate I earn from qualifying purchases, at no additional cost to you. Limitations are documented alongside each product for a straightforward reason: a purchase you regret costs me a reader, and readers are worth more than individual commissions.